R.I. Gen. Laws § 30-13-84: Unlawful enlistment, appointment, or separation.

Any person subject to this code who effects an enlistment or appointment in, or a separation from, the state military forces of any person, who is known to him or her to be ineligible for that enlistment, appointment, or separation because it is prohibited by law, regulation, or order, shall be punished as a court-martial may direct.